| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache license, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the license for the specific language governing permissions and |
| * limitations under the license. |
| */ |
| package org.apache.logging.log4j.core.pattern; |
| |
| import java.util.UUID; |
| |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.config.plugins.Plugin; |
| import org.apache.logging.log4j.core.util.UuidUtil; |
| |
| /** |
| * Formats the event sequence number. |
| */ |
| @Plugin(name = "UuidPatternConverter", category = PatternConverter.CATEGORY) |
| @ConverterKeys({ "u", "uuid" }) |
| public final class UuidPatternConverter extends LogEventPatternConverter { |
| |
| private final boolean isRandom; |
| |
| /** |
| * Private constructor. |
| */ |
| private UuidPatternConverter(final boolean isRandom) { |
| super("u", "uuid"); |
| this.isRandom = isRandom; |
| } |
| |
| /** |
| * Obtains an instance of SequencePatternConverter. |
| * |
| * @param options options, currently ignored, may be null. |
| * @return instance of SequencePatternConverter. |
| */ |
| public static UuidPatternConverter newInstance(final String[] options) { |
| if (options.length == 0) { |
| return new UuidPatternConverter(false); |
| } |
| |
| if (options.length > 1 || (!options[0].equalsIgnoreCase("RANDOM") && !options[0].equalsIgnoreCase("Time"))) { |
| LOGGER.error("UUID Pattern Converter only accepts a single option with the value \"RANDOM\" or \"TIME\""); |
| } |
| return new UuidPatternConverter(options[0].equalsIgnoreCase("RANDOM")); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void format(final LogEvent event, final StringBuilder toAppendTo) { |
| final UUID uuid = isRandom ? UUID.randomUUID() : UuidUtil.getTimeBasedUuid(); |
| toAppendTo.append(uuid.toString()); |
| } |
| } |